Portable conveyer loader



June 10, 1930- J. P. POLSTER PORTABLE commas-1.0mm

Filed Nov. 14, 192B VENTOR BY i 1%. fwoq,

ATTORNEY.

Patented June 10, 1930 UNITED STATES PATENT orrrcs 302521? I. POLSTER, F ALTON, ILLINOIs, AssIeNon. To DUNCAN FOUNDRY AND MA- CHINE WORKS, Ind, 01 ALTON, ILLINoIs, A CORPORATION OF ILLINOIs PORTABLE CONVEYER LOADER This invention relates to certain new and useful improvements in portable conveyer loaders for mine cars and other purposes,

the peculiarities of which will be hereinafter 25 fully described and claimed.

The main objects of my invention are to provide a conveyer loader with an auxiliary feeder conveyer adapted to be swung in a wide are on either side of the main. conveyer and deliver thereinto in any adjusted position, and thus allow of collecting coal from a fan-shaped area or around a post or corner, without necessarily changing the oint of delivery; secondly, to support said eeder pivotally from the main conveyer; thirdly, to operate said feeder from the drive of the main conveyer whatever the adjusted position of said feeder; and fourthly, to provide other features hereafter described and claimed.

In the accompanying drawing in which like reference numerals indicate corresponding parts- I Fig. 1 represents a side elevation of a machine exemplifying my invention;

Fig. 2, an end view of the main frame, section of the feeder support and longitudinal shaft on the line 2--2 of Fig. 1;

Fig. 3, a sectional elevation on the line 3-3 of Fig. 1;

Fig. 4:, a plan view of the feeder support on the horizontal plane 44: of Fig. 1;

Fig. 5, a plan view ofthe loader with feeder swung to one side; and v I Fig. 6, a detail of the conveyer chain enlarged.

. Referring to the drawing, the numeral 5 designates carrying wheels, flanged for track rails or otherwise, and supporting a rectangular main frame.

This frame preferably consists of posts 7 and 8, horizontal side bars 9, 10 and 11 with braces, and cross bars for a motor 12 adapted for electric connection and operatively connected by flexible coupling and worm gearingor otherwise, to a chain drive,the main shaft 13 of which is preferably mounted in boxes ll on the side bars 11. A double line of conveyer chain 15 and cross bars 16, are

carried over sprockets on end shafts 17 and 18 mounted at the ends of a conveyer trough 19 that is supported on said posts 7 and 8 of the rectangular frame. These cross bars are preferably T-section, with ends bent and provided with holes corresponding to the chain pitch for special pivot pins 20 that are longer than the standard pins 21 and drilled for cotters, so as to pass through the bent ends of said bars, and be secured. Two of these special pins 20 at each end of said bars connect with the adjacent chain link and avoid the usual special link attachment,

Each chain is engaged by a sprocket wheel 22 mounted on each end of said main shaft 13, and is provided with a guide sprocket 24, and tightener sprocket 23 mounted on a spring-controlled pivoted arm 25, as shown in Fig. 1.

On the main shaft 13 is also mounted a driving sprocket 26, connected by a chain 27 with a sprocket 28 on a horizontal cross shaft 29 mounted in boxes 30 supported by said posts 7 A. casing 31 supported by said boxes or otherwise, encloses bevel gears on said shaft 29 and on a vertical shaft 32 that extends into an upper casing 33, which has a swing joint connection at 3A with the lower casing. A pivot pin bolt 35 in the axis of the vertical shaft, connects a flat bar tongue 36 with the flange of an angle cross bar 37 supported by said posts7. The upper casing is secured to said tongue and swingswith it. j

A horizontal longitudinal shaft 38 has one end mounted in the upper casing, and is driven by. the vertical shaft through bevel gears in the upper casing which are mounted on the vertical and longitudinal shafts respectively. The other end of the shaft 38 is mounted in a casing 39 supported by leg boxes 4.0 from a platform 41 fastened on the wide end of a supporting frame formed by bars 42, converging toward and secured to said tongue 36, and having lower converging braces 4-3 and vertical struts 4A. Aflat bar tongue 45 secured to the adjacent ends of the said braces, is pivoted in the axis A of the vertical shaft 32 by a bolt 46, to the flange of a lower angle of the longitudinal shaft 38. Sprocket Wheels 49 are mounted on the ends of shaft Secured to said supporting frame at the ends of the platform 41 are side plates 50, pivotally connected by bolts 51-or otherwise-in the axis of the shaft 48 to u per plates 52 depending from the sides 0 an auxiliary conveyer'trough 53, the front end of which is on or near the ground and the rear end ositioned over the front receiving end 0 the main conveyer as shown in Figs. 1 and 5, to discharge thereinto. This feeder trough has a chain conveyer similar to that of the main conveyer, with chains passing over sprockets on shafts 54 and 55 at its ends, and engaging said sprocket wheels 49. A tightener sprocket 56 in a spring-controlled frame 57, is provided for each chain.

' The receiving front end of this feeder trough is preferably provided with a deeper side angle 58 to support a wood backing 59 below the plate bottom of the trough, and serve as a shock absorber to prevent the plate bottom being bent into hollows by the heavy pieces of coal or rock dumped into it. This wood backing also serves to deaden and reduce the spring tendency .of the plate bottom, as well as to avoid the weight of the feeder if it were provided with a plate bottom thick enough to prevent indenting under the blows of the material dumped upon it.

The feeder and main conveyer are thus adapted to be driven from one motor, and the feeder to be operated in any osition to which it may be swun about t e vertical axis A, as indicated in ig. 5, and dischar into the main conveyer, which latter will continue to discharge at the same point as before unless it is moved on the track. The feeder is so balanced on its ivotal connection with the truss frame, t at its front end is easil raised from'the ground to swing it horizontall to any desired point of a wide semicirc e where coal is to be dumped into the feeder. The side bar 11 of the mainframe is bolted or otherwise secured to the posts 7 and 8, so as to be readily removed and al.- low access to the motor and other drive mechanism for removal and replacement.

I claim 1. A conve conveyer, a

er loader comprising a main eeder conveyer, a supporting frame for the feeder conveyer having upper and lower pivot tongues in a vertical axis adapted to swing about said axis, a geareasing carried by the upper tongue so as to form a swing casing, a fixed gear casing mounted on said main conveyer in said vertical axis below the swing casing, a vertical shaft between said casings and in said vertical axis, operative connections between said vertical shaft and the feeder-conveyer, a horizontal shaft mounted on the main conveyer and passing through the fixed casin and operatively connected to the vertica shaft, and driving means for the main conveyer and operatively connected to saidhorizontal shaft. w r

2. A conveyer loader comprising a main conveyer, a fixed lower casing on the front of the said main conveyer, an upper casing having a swing joint connection 11 on the lower casing, a truss frame pivote in the rear above and below said casings in their vertical axis and secured to the upper casing, a feeder conveyer pivoted by the middle tothe wide front end of said frame on 7 a horizontal axis, separate drag mechanisms for the main and feeder conveyers, operative connections located in the vertical axis of said casings and the horizontal axis of said pivotal support of the feeder, and driving mechanism for the main drag mechanism, substantially as described.

3. A conveyer loader comprising a main conveyer and its driving mechanism, a feeder conveyer and its driven mechanism, upper and lower supportin side plates located midway below said fee er and pivoted together in pairs on a horizontal axis, a supporting secure at their front ends to the lower pair of said side plates and converging horizontally at the rear to upper and lower tongues in a vertical axis through pivot connections with said main conveyer, cross bars at the front of the main conveyer and pivotally connected to said tongues in said vertical axis, and operative connections betweensaid driving and driven mechanisms, substantially as described.

4. In a conveyer loader comprising a main conveyer, and a feeder conveyer havin depending side plates in pairs pivote toether, the hereindesc ribed pivotal truss rame consisting of bars and braces connected in a horizontal axis at the front to said side plates and converging horizontally and diverging vertically rearward t0 tongues spaced apart on a vertical axis and having vertical struts connecting tongues, and matching supports onthe main conveyer for the .pivot connections of said tongues respectively, substantially as described. I

5. A conveyer loader comprising a main conveyer and its driving mechanism, a feedsaid frame comprising bars and braces l lo its

er conveyer and its driven mechanism, a pivotal truss frame pivotally connected to both said conveyers and having a Wide front end platform, boxes thereon, a horizontal cross shaft mounted in said boxes and operatively connected to said feeder mechanism, and a longitudinal shaft having its ends operatively connected to said cross shaft and the driving mechanism of the main conveyer respectively, substantially as described.

In testimony whereof I have aflixed my signature.

JOHN P. POLSTER. 

